Wearable display device

Abstract

A wearable display device can include a display frame, a first lens coupled to the display frame, a second lens coupled to the display frame, and a detent mechanism. The detent mechanism can include a body, with the body defining a first cavity and a second cavity radially spaced about a circumferential surface of the body, and a detent configured to engage with at least one of the first cavity or the second cavity. The wearable display device can further include a first rail movably coupled to the body, with the first rail coupled to the first lens, and a second rail movably coupled to the body, with the second rail coupled to the second lens.

What is claimed is: 
     
         1 . A wearable display device, comprising:
 a display frame;   a first lens coupled to the display frame;   a second lens coupled to the display frame;   a detent mechanism, comprising:
 a body defining a first cavity and a second cavity radially spaced about a circumferential surface of the body; and 
 a detent configured to engage with at least one of the first cavity or the second cavity; 
   a first rail movably coupled to the body, the first rail coupled to the first lens; and   a second rail movably coupled to the body, the second rail coupled to the second lens.   
     
     
         2 . The wearable display device of  claim 1 , wherein the body defines a cam surface between the first cavity and the second cavity. 
     
     
         3 . The wearable display device of  claim 2 , wherein the cam surface includes a higher coefficient of friction than the first cavity and the second cavity. 
     
     
         4 . The wearable display device of  claim 2 , wherein the cam surface comprises an elastomer. 
     
     
         5 . The wearable display device of  claim 1 , wherein the body comprises at least one of a polymer, a carbon-steel, or a ceramic. 
     
     
         6 . The wearable display device of  claim 1 , further comprising an encoder configured to determine a body position. 
     
     
         7 . The wearable display device of  claim 1 , further comprising a pin coupled to the body, the body configured to rotate relative to the pin. 
     
     
         8 . The wearable display device of  claim 1 , wherein the first rail and the second rail are configured to translate symmetrically relative to the body. 
     
     
         9 . The wearable display device of  claim 1 , wherein the detent comprises at least one of a spring-loaded ball, a plunger, a roller, or a flexure. 
     
     
         10 . The wearable display device of  claim 1 , wherein the first cavity and the second cavity comprise at least one of a pin, a triangle, or a scallop shape. 
     
     
         11 . The wearable display device of  claim 1 , wherein the first cavity defines an asymmetric profile on the circumferential surface of the body, the asymmetric profile configured to provide varied feedback based on a direction of travel of the body. 
     
     
         12 . A wearable display device, comprising:
 a display frame;   a first lens coupled to the display frame;   a second lens coupled to the display frame;   a detent mechanism, comprising:
 a body including an outer surface defining a first cavity and a second cavity; and 
 a detent configured to engage with at least one of the first cavity or the second cavity, the detent mechanism movable into a first detent position and a second detent position; 
   a pin coupled to the body, the body configured to rotate relative to the pin;   a first rail movably coupled to the body, the first rail coupled to the first lens; and   a second rail movably coupled to the body, the second rail coupled to the second lens.   
     
     
         13 . The wearable display device of  claim 12 , wherein:
 when the detent is in a first detent position engaged with the first cavity, the detent secures the body in a first body position and the body in the first body position secures the first rail and the second rail in a first rail position;   the first rail and the second rail in the first rail position secures the first lens and the second lens in a first lens position defined by a first width;   when the detent is in a second detent position engaged with the second cavity, the detent secures the body in a second body position and the body in the second body position secures the first rail and the second rail in a second rail position; and   the first rail and the second rail in the second rail position secures the first lens and the second lens in a second lens position defined by a second width.   
     
     
         14 . The wearable display device of  claim 12 , further comprising a magnet coupled to the body. 
     
     
         15 . The wearable display device of  claim 14 , further comprising a magnet array disposed radially about the body, the magnet array configured to be used to determine a position of the body. 
     
     
         16 . A wearable display device, comprising:
 a display frame;   a lens coupled to the display frame; and   a lens adjustment mechanism, comprising:
 a body movably coupled to the lens and defining:
 a first cavity; 
 a second cavity; and 
 a cam surface extending between the first cavity and the second cavity, the cam surface having to a higher coefficient of friction relative to the first cavity and the second cavity; 
 
 a detent configured to engage with at least one of the first cavity, the second cavity, or the cam surface; and 
 a pin coupled to the body, the body configured to rotate relative to the pin. 
   
     
     
         17 . The wearable display device of  claim 16 , wherein the cam surface comprises an elastomer material such that the cam surface is configured to increase resistance to a sliding force between the cam surface and the detent relative to the first cavity and the second cavity. 
     
     
         18 . The wearable display device of  claim 16 , wherein the first cavity and the second cavity include a geometry configured to resist the detent from disengaging with the first cavity and the second cavity. 
     
     
         19 . The wearable display device of  claim 16 , further comprising a Hall effect sensor. 
     
     
         20 . The wearable display device of  claim 19 , wherein the Hall effect sensor is configured to determine a position of the body.